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⨖

quaternion integral operator

Quaternion Integral Operator

To enter ⨖, use your editor’s Unicode hex input or, in a compatible LaTeX setup, <code>\sqint</code>. In formulas, it marks integration in quaternionic mathematics: the operator tells readers that the quantities involved are quaternions.

Text symbol

Search it as: quatint · sqint · quaternion integral · quaternion integration · quaternion calculus · quatint HTML entity
Shows up in: Anything that takes text · its shape is whatever your font draws

What ⨖ means

On supported Linux apps, use Unicode hex input; in LaTeX, use \sqint.

In a Linux app with Unicode entry, press Ctrl+Shift+U, type 2a16, then Enter. In LaTeX, the unicode-math package provides \sqint when the font and math engine support it.

In a formula, ⨖ is a large operator for integration in quaternionic mathematics. A quaternion is a number system; the symbol signals that the integral is in that setting.

What is the history of quaternion integration?

A 1907 paper discusses quaternion integral theorems. That dates the mathematics, not the first use of this exact printed glyph.

Don't confuse it with

∫

Integral

The ordinary integral sign does not itself specify quaternionic calculus.

⨌

Quadruple Integral Operator

This is a quadruple-integral operator; it signals repeated integration, not quaternion-valued integration.

Combination ideas

A schematic quaternion integral; define the function, variable, and any limits in the surrounding notation.

Questions people ask

Why is the quaternion integral symbol missing?

It can be. A font without the glyph, or a renderer without mathematical-layout support, may show a blank box or fallback shape. A font with math-symbol coverage and a math-aware renderer is needed for the intended form.

How to type ⨖

Windows (Word)

Alt+XType 2A16, then Alt+X to get ⨖.

Windows

Win+Rrun charmap for the full table, or use the emoji picker's Ω symbols tab (Win + .).

macOS

Control+Command+SpaceOpen the character viewer and search “quaternion integral operator”.

Linux

Ctrl+Shift+UType 2a16, then Enter or Space.

HTML

⨖

CSS

\2A16

How to type quaternion integral operator

In a Linux app with Unicode entry, press Ctrl+Shift+U, type `2a16`, then Enter.

LaTeX macro sqint

In LaTeX with `unicode-math`, use `\sqint` if your font and math engine support it.

quatint HTML entity

In HTML, use the named character reference `&quatint;`.

Codes and encoding1 code points

HTML decimal

⨖

HTML hex

⨖

CSS content

content: "\2A16";

Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.

URL encoded

%E2%A8%96

On screen

Code points

JS .length

UTF-8 bytes

A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.

Families this belongs to

Maths & numbers1,835 symbols

1️⃣📏📐✖️➕➖➗🟰♾️#️⃣*️⃣0️⃣